********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 25 January 2007 Vol. XX No. 004 ______________________________________________________________________ GENERAL INFORMATION: To receive this information electronically, contact: ser7@maia.usno.navy.mil or use MJD = Julian Date - 2 400 000.5 days UT2-UT1 = 0.022 sin(2*pi*T) - 0.012 cos(2*pi*T) - 0.006 sin(4*pi*T) + 0.007 cos(4*pi*T) where pi = 3.14159265... and T is the date in Besselian years. TT = TAI + 32.184 seconds DUT1= (UT1-UTC) transmitted with time signals = +0.0 seconds beginning 22 December 2006 at 0000 UTC Beginning 1 January 2006: TAI-UTC(BIPM) = 33.000 000 seconds ********************************************************************** * As of Bulletin A Vol. XX, No. 004, on 25 January 2007, we have * * modified the prediction algorithm to improve the polar motion * * predictions. More details on the algorithm will be provided * * in the IERS Annual Report. * ********************************************************************** ________________________________________________________________________ The contributed observations used in the preparation of this Bulletin are available at . The contributed analysis results are based on data from Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR), the Global Positioning System (GPS) satellites, Lunar Laser Ranging (LLR), and meteorological predictions of variations in Atmospheric Angular Momentum (AAM). ________________________________________________________________________ COMBINED EARTH ORIENTATION PARAMETERS: IERS Rapid Service MJD x error y error UT1-UTC error " " " " s s 7 1 19 54119 -.05589 .00009 .37693 .00010 .020442 .000011 7 1 20 54120 -.05562 .00009 .37940 .00010 .019221 .000011 7 1 21 54121 -.05554 .00009 .38140 .00009 .017680 .000012 7 1 22 54122 -.05529 .00009 .38308 .00009 .015859 .000012 7 1 23 54123 -.05500 .00009 .38481 .00009 .013818 .000013 7 1 24 54124 -.05475 .00009 .38664 .00009 .011695 .000048 7 1 25 54125 -.05464 .00009 .38867 .00009 .009664 .000057 _______________________________________________________________________ PREDICTIONS: The following formulas will not reproduce the predictions given below, but may be used to extend the predictions beyond the end of this table. x = .0119 - .0819 cos A - .0450 sin A + .0210 cos C + .1373 sin C y = -.0416 + .0432 cos A - .0734 sin A - .1373 cos C + .0210 sin C UT1-UTC = -.0109 - .00092 (MJD - 54130) - (UT2-UT1) where A = 2*pi*(MJD-54125)/365.25 and C = 2*pi*(MJD-54125)/435. TAI-UTC(MJD 54126) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-54125)**0.80 S t = 0.00025 (MJD-54125)**0.75 Estimated accuracies are: Predictions 10 d 20 d 30 d 40 d Polar coord's 0.004 0.007 0.010 0.013 UT1-UTC 0.0014 0.0024 0.0032 0.0040 MJD x(arcsec) y(arcsec) UT1-UTC(sec) 2007 1 26 54126 -0.0543 0.3905 0.00786 2007 1 27 54127 -0.0540 0.3925 0.00637 2007 1 28 54128 -0.0537 0.3944 0.00518 2007 1 29 54129 -0.0532 0.3963 0.00420 2007 1 30 54130 -0.0526 0.3981 0.00332 2007 1 31 54131 -0.0520 0.3998 0.00242 2007 2 1 54132 -0.0512 0.4016 0.00139 2007 2 2 54133 -0.0505 0.4034 0.00016 2007 2 3 54134 -0.0497 0.4052 -0.00127 2007 2 4 54135 -0.0489 0.4070 -0.00285 2007 2 5 54136 -0.0480 0.4087 -0.00455 2007 2 6 54137 -0.0471 0.4105 -0.00628 2007 2 7 54138 -0.0461 0.4122 -0.00800 2007 2 8 54139 -0.0451 0.4139 -0.00962 2007 2 9 54140 -0.0441 0.4156 -0.01108 2007 2 10 54141 -0.0430 0.4172 -0.01235 2007 2 11 54142 -0.0419 0.4189 -0.01342 2007 2 12 54143 -0.0408 0.4205 -0.01432 2007 2 13 54144 -0.0396 0.4221 -0.01510 2007 2 14 54145 -0.0384 0.4237 -0.01588 2007 2 15 54146 -0.0371 0.4253 -0.01677 2007 2 16 54147 -0.0359 0.4269 -0.01788 2007 2 17 54148 -0.0346 0.4284 -0.01929 2007 2 18 54149 -0.0333 0.4299 -0.02102 2007 2 19 54150 -0.0319 0.4314 -0.02301 2007 2 20 54151 -0.0305 0.4329 -0.02512 2007 2 21 54152 -0.0291 0.4344 -0.02716 2007 2 22 54153 -0.0277 0.4358 -0.02898 2007 2 23 54154 -0.0262 0.4372 -0.03049 2007 2 24 54155 -0.0247 0.4386 -0.03168 2007 2 25 54156 -0.0232 0.4400 -0.03265 2007 2 26 54157 -0.0216 0.4413 -0.03349 2007 2 27 54158 -0.0201 0.4426 -0.03433 2007 2 28 54159 -0.0185 0.4439 -0.03526 2007 3 1 54160 -0.0169 0.4452 -0.03635 2007 3 2 54161 -0.0152 0.4465 -0.03762 2007 3 3 54162 -0.0135 0.4477 -0.03906 2007 3 4 54163 -0.0119 0.4489 -0.04064 2007 3 5 54164 -0.0101 0.4501 -0.04229 2007 3 6 54165 -0.0084 0.4512 -0.04394 2007 3 7 54166 -0.0066 0.4523 -0.04552 2007 3 8 54167 -0.0049 0.4534 -0.04697 2007 3 9 54168 -0.0031 0.4545 -0.04825 2007 3 10 54169 -0.0012 0.4555 -0.04935 2007 3 11 54170 0.0006 0.4566 -0.05030 2007 3 12 54171 0.0025 0.4575 -0.05113 2007 3 13 54172 0.0043 0.4585 -0.05192 2007 3 14 54173 0.0063 0.4594 -0.05276 2007 3 15 54174 0.0082 0.4603 -0.05378 2007 3 16 54175 0.0101 0.4612 -0.05509 2007 3 17 54176 0.0121 0.4621 -0.05673 2007 3 18 54177 0.0140 0.4629 -0.05869 2007 3 19 54178 0.0160 0.4637 -0.06087 2007 3 20 54179 0.0180 0.4644 -0.06310 2007 3 21 54180 0.0201 0.4651 -0.06516 2007 3 22 54181 0.0221 0.4658 -0.06694 2007 3 23 54182 0.0241 0.4665 -0.06836 2007 3 24 54183 0.0262 0.4671 -0.06949 2007 3 25 54184 0.0283 0.4677 -0.07043 2007 3 26 54185 0.0304 0.4683 -0.07133 2007 3 27 54186 0.0325 0.4689 -0.07230 2007 3 28 54187 0.0346 0.4694 -0.07343 2007 3 29 54188 0.0367 0.4698 -0.07474 2007 3 30 54189 0.0389 0.4703 -0.07622 2007 3 31 54190 0.0410 0.4707 -0.07786 2007 4 1 54191 0.0432 0.4711 -0.07958 2007 4 2 54192 0.0453 0.4714 -0.08133 2007 4 3 54193 0.0475 0.4717 -0.08302 2007 4 4 54194 0.0497 0.4720 -0.08461 2007 4 5 54195 0.0519 0.4723 -0.08603 2007 4 6 54196 0.0541 0.4725 -0.08728 2007 4 7 54197 0.0563 0.4727 -0.08835 2007 4 8 54198 0.0585 0.4728 -0.08929 2007 4 9 54199 0.0607 0.4729 -0.09016 2007 4 10 54200 0.0629 0.4730 -0.09105 2007 4 11 54201 0.0651 0.4731 -0.09204 2007 4 12 54202 0.0674 0.4731 -0.09325 2007 4 13 54203 0.0696 0.4731 -0.09476 2007 4 14 54204 0.0718 0.4730 -0.09659 2007 4 15 54205 0.0741 0.4729 -0.09868 2007 4 16 54206 0.0763 0.4728 -0.10090 2007 4 17 54207 0.0785 0.4726 -0.10305 2007 4 18 54208 0.0808 0.4724 -0.10496 2007 4 19 54209 0.0830 0.4722 -0.10654 2007 4 20 54210 0.0852 0.4720 -0.10776 2007 4 21 54211 0.0875 0.4717 -0.10873 2007 4 22 54212 0.0897 0.4713 -0.10959 2007 4 23 54213 0.0919 0.4710 -0.11046 2007 4 24 54214 0.0941 0.4706 -0.11145 2007 4 25 54215 0.0964 0.4702 -0.11259 2007 4 26 54216 0.0986 0.4697 -0.11390 2007 4 27 54217 0.1008 0.4692 -0.11533 2007 4 28 54218 0.1030 0.4687 -0.11685 2007 4 29 54219 0.1052 0.4681 -0.11839 2007 4 30 54220 0.1074 0.4675 -0.11988 2007 5 1 54221 0.1095 0.4669 -0.12126 2007 5 2 54222 0.1117 0.4662 -0.12249 2007 5 3 54223 0.1139 0.4655 -0.12353 2007 5 4 54224 0.1160 0.4648 -0.12439 2007 5 5 54225 0.1182 0.4641 -0.12509 2007 5 6 54226 0.1203 0.4633 -0.12570 2007 5 7 54227 0.1224 0.4624 -0.12630 2007 5 8 54228 0.1245 0.4616 -0.12696 2007 5 9 54229 0.1266 0.4607 -0.12779 2007 5 10 54230 0.1287 0.4598 -0.12887 2007 5 11 54231 0.1308 0.4588 -0.13022 2007 5 12 54232 0.1328 0.4578 -0.13184 2007 5 13 54233 0.1349 0.4568 -0.13361 2007 5 14 54234 0.1369 0.4557 -0.13540 2007 5 15 54235 0.1389 0.4547 -0.13704 2007 5 16 54236 0.1409 0.4536 -0.13838 2007 5 17 54237 0.1429 0.4524 -0.13938 2007 5 18 54238 0.1448 0.4512 -0.14008 2007 5 19 54239 0.1468 0.4500 -0.14060 2007 5 20 54240 0.1487 0.4488 -0.14107 2007 5 21 54241 0.1506 0.4475 -0.14163 2007 5 22 54242 0.1525 0.4462 -0.14234 2007 5 23 54243 0.1543 0.4449 -0.14320 2007 5 24 54244 0.1562 0.4436 -0.14421 2007 5 25 54245 0.1580 0.4422 -0.14529 2007 5 26 54246 0.1598 0.4408 -0.14639 2007 5 27 54247 0.1616 0.4394 -0.14744 2007 5 28 54248 0.1633 0.4379 -0.14840 2007 5 29 54249 0.1650 0.4364 -0.14919 2007 5 30 54250 0.1667 0.4349 -0.14980 2007 5 31 54251 0.1684 0.4334 -0.15021 2007 6 1 54252 0.1701 0.4318 -0.15046 2007 6 2 54253 0.1717 0.4302 -0.15058 2007 6 3 54254 0.1733 0.4286 -0.15067 2007 6 4 54255 0.1749 0.4269 -0.15080 2007 6 5 54256 0.1764 0.4253 -0.15106 2007 6 6 54257 0.1780 0.4236 -0.15154 2007 6 7 54258 0.1794 0.4219 -0.15226 2007 6 8 54259 0.1809 0.4201 -0.15321 2007 6 9 54260 0.1824 0.4184 -0.15433 2007 6 10 54261 0.1838 0.4166 -0.15550 2007 6 11 54262 0.1851 0.4148 -0.15656 2007 6 12 54263 0.1865 0.4130 -0.15740 2007 6 13 54264 0.1878 0.4111 -0.15792 2007 6 14 54265 0.1891 0.4093 -0.15814 2007 6 15 54266 0.1904 0.4074 -0.15814 2007 6 16 54267 0.1916 0.4055 -0.15805 2007 6 17 54268 0.1928 0.4035 -0.15801 2007 6 18 54269 0.1939 0.4016 -0.15811 2007 6 19 54270 0.1951 0.3996 -0.15838 2007 6 20 54271 0.1962 0.3977 -0.15881 2007 6 21 54272 0.1972 0.3957 -0.15935 2007 6 22 54273 0.1983 0.3937 -0.15993 2007 6 23 54274 0.1993 0.3916 -0.16048 2007 6 24 54275 0.2002 0.3896 -0.16093 2007 6 25 54276 0.2012 0.3875 -0.16125 2007 6 26 54277 0.2020 0.3854 -0.16138 2007 6 27 54278 0.2029 0.3834 -0.16133 2007 6 28 54279 0.2037 0.3813 -0.16110 2007 6 29 54280 0.2045 0.3791 -0.16075 2007 6 30 54281 0.2053 0.3770 -0.16035 2007 7 1 54282 0.2060 0.3749 -0.15998 2007 7 2 54283 0.2067 0.3727 -0.15974 2007 7 3 54284 0.2073 0.3706 -0.15971 2007 7 4 54285 0.2079 0.3684 -0.15994 2007 7 5 54286 0.2085 0.3662 -0.16042 2007 7 6 54287 0.2090 0.3640 -0.16107 2007 7 7 54288 0.2095 0.3618 -0.16179 2007 7 8 54289 0.2100 0.3596 -0.16244 2007 7 9 54290 0.2104 0.3574 -0.16290 2007 7 10 54291 0.2107 0.3552 -0.16308 2007 7 11 54292 0.2111 0.3529 -0.16299 2007 7 12 54293 0.2114 0.3507 -0.16268 2007 7 13 54294 0.2117 0.3485 -0.16226 2007 7 14 54295 0.2119 0.3462 -0.16186 2007 7 15 54296 0.2121 0.3440 -0.16159 2007 7 16 54297 0.2122 0.3417 -0.16151 2007 7 17 54298 0.2123 0.3395 -0.16162 2007 7 18 54299 0.2124 0.3372 -0.16189 2007 7 19 54300 0.2124 0.3350 -0.16223 2007 7 20 54301 0.2124 0.3327 -0.16258 2007 7 21 54302 0.2124 0.3304 -0.16286 2007 7 22 54303 0.2123 0.3282 -0.16302 2007 7 23 54304 0.2122 0.3259 -0.16302 2007 7 24 54305 0.2120 0.3237 -0.16285 2007 7 25 54306 0.2118 0.3214 -0.16251 2007 7 26 54307 0.2116 0.3192 -0.16204 2007 7 27 54308 0.2113 0.3169 -0.16150 2007 7 28 54309 0.2109 0.3147 -0.16099 2007 7 29 54310 0.2106 0.3124 -0.16059 2007 7 30 54311 0.2102 0.3102 -0.16040 2007 7 31 54312 0.2097 0.3080 -0.16049 2007 8 1 54313 0.2093 0.3057 -0.16086 2007 8 2 54314 0.2088 0.3035 -0.16145 2007 8 3 54315 0.2082 0.3013 -0.16215 2007 8 4 54316 0.2076 0.2991 -0.16281 2007 8 5 54317 0.2070 0.2969 -0.16329 2007 8 6 54318 0.2063 0.2947 -0.16352 2007 8 7 54319 0.2056 0.2926 -0.16349 2007 8 8 54320 0.2048 0.2904 -0.16325 2007 8 9 54321 0.2040 0.2882 -0.16291 2007 8 10 54322 0.2032 0.2861 -0.16259 2007 8 11 54323 0.2024 0.2840 -0.16241 2007 8 12 54324 0.2015 0.2819 -0.16244 2007 8 13 54325 0.2005 0.2798 -0.16272 2007 8 14 54326 0.1995 0.2777 -0.16322 2007 8 15 54327 0.1985 0.2756 -0.16388 2007 8 16 54328 0.1975 0.2735 -0.16461 2007 8 17 54329 0.1964 0.2715 -0.16535 2007 8 18 54330 0.1953 0.2695 -0.16600 2007 8 19 54331 0.1941 0.2675 -0.16651 2007 8 20 54332 0.1929 0.2655 -0.16686 2007 8 21 54333 0.1917 0.2635 -0.16705 2007 8 22 54334 0.1904 0.2615 -0.16713 2007 8 23 54335 0.1891 0.2596 -0.16718 2007 8 24 54336 0.1878 0.2577 -0.16731 2007 8 25 54337 0.1864 0.2558 -0.16760 2007 8 26 54338 0.1850 0.2539 -0.16814 2007 8 27 54339 0.1836 0.2520 -0.16901 2007 8 28 54340 0.1821 0.2502 -0.17019 2007 8 29 54341 0.1806 0.2484 -0.17165 2007 8 30 54342 0.1790 0.2466 -0.17326 2007 8 31 54343 0.1775 0.2448 -0.17487 2007 9 1 54344 0.1759 0.2431 -0.17630 2007 9 2 54345 0.1742 0.2414 -0.17742 2007 9 3 54346 0.1726 0.2397 -0.17818 2007 9 4 54347 0.1709 0.2380 -0.17864 2007 9 5 54348 0.1691 0.2364 -0.17890 2007 9 6 54349 0.1674 0.2348 -0.17908 2007 9 7 54350 0.1656 0.2332 -0.17932 2007 9 8 54351 0.1638 0.2316 -0.17974 2007 9 9 54352 0.1619 0.2301 -0.18031 2007 9 10 54353 0.1601 0.2286 -0.18101 2007 9 11 54354 0.1582 0.2271 -0.18176 2007 9 12 54355 0.1562 0.2256 -0.18257 2007 9 13 54356 0.1543 0.2242 -0.18333 2007 9 14 54357 0.1523 0.2228 -0.18400 2007 9 15 54358 0.1503 0.2214 -0.18447 2007 9 16 54359 0.1483 0.2201 -0.18472 2007 9 17 54360 0.1462 0.2188 -0.18481 2007 9 18 54361 0.1441 0.2175 -0.18478 2007 9 19 54362 0.1420 0.2163 -0.18462 2007 9 20 54363 0.1399 0.2151 -0.18443 2007 9 21 54364 0.1377 0.2139 -0.18433 2007 9 22 54365 0.1356 0.2128 -0.18444 2007 9 23 54366 0.1334 0.2117 -0.18486 2007 9 24 54367 0.1311 0.2106 -0.18564 2007 9 25 54368 0.1289 0.2096 -0.18678 2007 9 26 54369 0.1267 0.2086 -0.18817 2007 9 27 54370 0.1244 0.2076 -0.18974 2007 9 28 54371 0.1221 0.2067 -0.19127 2007 9 29 54372 0.1198 0.2057 -0.19260 2007 9 30 54373 0.1174 0.2049 -0.19361 2007 10 1 54374 0.1151 0.2041 -0.19430 2007 10 2 54375 0.1127 0.2033 -0.19480 2007 10 3 54376 0.1103 0.2025 -0.19522 2007 10 4 54377 0.1080 0.2018 -0.19571 2007 10 5 54378 0.1055 0.2011 -0.19642 2007 10 6 54379 0.1031 0.2004 -0.19740 2007 10 7 54380 0.1007 0.1998 -0.19861 2007 10 8 54381 0.0982 0.1993 -0.19993 2007 10 9 54382 0.0958 0.1987 -0.20128 2007 10 10 54383 0.0933 0.1982 -0.20262 2007 10 11 54384 0.0908 0.1978 -0.20390 2007 10 12 54385 0.0883 0.1973 -0.20510 2007 10 13 54386 0.0858 0.1969 -0.20621 2007 10 14 54387 0.0833 0.1966 -0.20717 2007 10 15 54388 0.0808 0.1963 -0.20803 2007 10 16 54389 0.0783 0.1960 -0.20886 2007 10 17 54390 0.0757 0.1958 -0.20968 2007 10 18 54391 0.0732 0.1956 -0.21051 2007 10 19 54392 0.0706 0.1954 -0.21145 2007 10 20 54393 0.0681 0.1953 -0.21256 2007 10 21 54394 0.0655 0.1953 -0.21386 2007 10 22 54395 0.0630 0.1952 -0.21539 2007 10 23 54396 0.0604 0.1952 -0.21714 2007 10 24 54397 0.0578 0.1953 -0.21903 2007 10 25 54398 0.0553 0.1953 -0.22093 2007 10 26 54399 0.0527 0.1955 -0.22272 2007 10 27 54400 0.0501 0.1956 -0.22422 2007 10 28 54401 0.0476 0.1958 -0.22542 2007 10 29 54402 0.0450 0.1961 -0.22636 2007 10 30 54403 0.0425 0.1964 -0.22714 2007 10 31 54404 0.0399 0.1967 -0.22784 2007 11 1 54405 0.0373 0.1970 -0.22859 2007 11 2 54406 0.0348 0.1974 -0.22955 2007 11 3 54407 0.0322 0.1979 -0.23072 2007 11 4 54408 0.0297 0.1984 -0.23197 2007 11 5 54409 0.0272 0.1989 -0.23320 2007 11 6 54410 0.0246 0.1994 -0.23436 2007 11 7 54411 0.0221 0.2000 -0.23544 2007 11 8 54412 0.0196 0.2007 -0.23639 2007 11 9 54413 0.0171 0.2013 -0.23714 2007 11 10 54414 0.0146 0.2020 -0.23768 2007 11 11 54415 0.0121 0.2028 -0.23806 2007 11 12 54416 0.0097 0.2036 -0.23830 2007 11 13 54417 0.0072 0.2044 -0.23845 2007 11 14 54418 0.0047 0.2053 -0.23853 2007 11 15 54419 0.0023 0.2062 -0.23864 2007 11 16 54420 -0.0001 0.2071 -0.23886 2007 11 17 54421 -0.0025 0.2081 -0.23931 2007 11 18 54422 -0.0049 0.2091 -0.24003 2007 11 19 54423 -0.0073 0.2102 -0.24098 2007 11 20 54424 -0.0096 0.2113 -0.24215 2007 11 21 54425 -0.0120 0.2124 -0.24344 2007 11 22 54426 -0.0143 0.2136 -0.24473 2007 11 23 54427 -0.0166 0.2148 -0.24578 2007 11 24 54428 -0.0189 0.2160 -0.24649 2007 11 25 54429 -0.0212 0.2173 -0.24693 2007 11 26 54430 -0.0234 0.2186 -0.24720 2007 11 27 54431 -0.0257 0.2199 -0.24743 2007 11 28 54432 -0.0279 0.2213 -0.24773 2007 11 29 54433 -0.0301 0.2227 -0.24825 2007 11 30 54434 -0.0322 0.2241 -0.24901 2007 12 1 54435 -0.0344 0.2256 -0.24997 2007 12 2 54436 -0.0365 0.2271 -0.25103 2007 12 3 54437 -0.0386 0.2287 -0.25210 2007 12 4 54438 -0.0406 0.2303 -0.25307 2007 12 5 54439 -0.0427 0.2319 -0.25385 2007 12 6 54440 -0.0447 0.2335 -0.25449 2007 12 7 54441 -0.0467 0.2352 -0.25493 2007 12 8 54442 -0.0486 0.2369 -0.25513 2007 12 9 54443 -0.0506 0.2386 -0.25513 2007 12 10 54444 -0.0525 0.2404 -0.25503 2007 12 11 54445 -0.0543 0.2422 -0.25483 2007 12 12 54446 -0.0562 0.2440 -0.25464 2007 12 13 54447 -0.0580 0.2459 -0.25457 2007 12 14 54448 -0.0598 0.2478 -0.25464 2007 12 15 54449 -0.0615 0.2497 -0.25485 2007 12 16 54450 -0.0632 0.2516 -0.25530 2007 12 17 54451 -0.0649 0.2536 -0.25594 2007 12 18 54452 -0.0666 0.2556 -0.25670 2007 12 19 54453 -0.0682 0.2576 -0.25741 2007 12 20 54454 -0.0698 0.2596 -0.25797 2007 12 21 54455 -0.0714 0.2617 -0.25827 2007 12 22 54456 -0.0729 0.2638 -0.25836 2007 12 23 54457 -0.0744 0.2659 -0.25832 2007 12 24 54458 -0.0758 0.2681 -0.25828 2007 12 25 54459 -0.0772 0.2702 -0.25835 2007 12 26 54460 -0.0786 0.2724 -0.25865 2007 12 27 54461 -0.0800 0.2746 -0.25922 2007 12 28 54462 -0.0813 0.2769 -0.26005 2007 12 29 54463 -0.0825 0.2791 -0.26099 2007 12 30 54464 -0.0838 0.2814 -0.26193 2007 12 31 54465 -0.0850 0.2837 -0.26287 2008 1 1 54466 -0.0861 0.2860 -0.26365 2008 1 2 54467 -0.0872 0.2883 -0.26422 2008 1 3 54468 -0.0883 0.2907 -0.26457 2008 1 4 54469 -0.0893 0.2931 -0.26469 2008 1 5 54470 -0.0903 0.2954 -0.26464 2008 1 6 54471 -0.0913 0.2978 -0.26445 2008 1 7 54472 -0.0922 0.3003 -0.26424 2008 1 8 54473 -0.0931 0.3027 -0.26409 2008 1 9 54474 -0.0939 0.3051 -0.26412 2008 1 10 54475 -0.0947 0.3076 -0.26436 2008 1 11 54476 -0.0954 0.3101 -0.26480 2008 1 12 54477 -0.0962 0.3126 -0.26545 2008 1 13 54478 -0.0968 0.3151 -0.26624 2008 1 14 54479 -0.0974 0.3176 -0.26713 2008 1 15 54480 -0.0980 0.3201 -0.26805 2008 1 16 54481 -0.0986 0.3226 -0.26892 2008 1 17 54482 -0.0991 0.3251 -0.26965 2008 1 18 54483 -0.0995 0.3277 -0.27014 2008 1 19 54484 -0.0999 0.3303 -0.27043 2008 1 20 54485 -0.1003 0.3328 -0.27060 2008 1 21 54486 -0.1006 0.3354 -0.27075 2008 1 22 54487 -0.1009 0.3380 -0.27101 2008 1 23 54488 -0.1011 0.3405 -0.27149 2008 1 24 54489 -0.1013 0.3431 -0.27223 2008 1 25 54490 -0.1014 0.3457 -0.27314 These predictions are based on all announced leap seconds. CELESTIAL POLE OFFSET SERIES: NEOS Celestial Pole Offset Series MJD dpsi error deps error (msec. of arc) 54104 -57.65 .46 -2.44 .12 54105 -57.33 .46 -2.29 .12 54106 -57.09 .46 -2.05 .12 54107 -56.97 .41 -1.84 .14 54108 -56.98 .41 -1.78 .14 54109 -57.13 .74 -1.85 .34 54110 -57.37 .38 -1.95 .34 54111 -57.64 .38 -1.96 .34 54112 -57.89 .38 -1.94 .34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 54104 0.148 0.183 -0.142 0.120 54105 0.169 0.183 -0.132 0.120 54106 0.184 0.183 -0.118 0.120 54107 0.183 0.163 -0.091 0.140 54108 0.179 0.163 -0.079 0.140 54109 0.170 0.294 -0.081 0.340 54110 0.158 0.151 -0.105 0.340 54111 0.139 0.151 -0.098 0.340 54112 0.119 0.151 -0.074 0.340 The IERS Conventions recommended software to predict celestial pole offsets is available at ftp://maia.usno.navy.mil/conventions/chapter5/ ceppred.f and software for the calculation of the dX and dY with respect to IAU2000A Nutation/Precession Theory can be found at the web site in section chapter 5.